Question 1 : Performance of BFSK signal is ________ than BPSK.
1. 3db worse
2. 3db better
3. 6db worse
4. 6db better
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Question 2 : The filters used with the equalizer is of ______ types.
1. Feed forward
2. Feed backward
3. Feed forward and feedback
4. None of the mentioned
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Question 3 : Thermal noise in the communication system due to thermal electrons
1. Can be eliminated
2. Cannot be eliminated
3. Can be avoided upto some extent
4. None of the mentioned
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Question 4 : The over-determined set of equations can be solved using
1. Zero forcing
2. Minimum mean square error
3. Zero forcing & Minimum mean square error
4. None of the mentioned
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Question 5 : Phase distortion occurs when
1. Phase response is function of frequency
2. Phase response is not a function of frequency
3. All of the mentioned
4. None of the mentioned
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Question 6 : Transversal equalizers are ________ and decision feedback equalizers are ______
1. Feed forward, feed back
2. Feed back, feed forward
3. Feed forward, feed forward
4. Feedback, feedback
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Question 7 : Which are called as hard decisions?
1. Estimates of message symbol with error correcting codes
2. Estimates of message symbol without error correcting codes
3. All of the mentioned
4. None of the mentioned
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Question 8 : The likelihood ratio test is done between
1. Likelihood of s1 by likelihood of s2
2. Likelihood of s2 by likelihood of s1
3. Likelihood of s1 by likelihood of s1
4. None of the mentioned
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Question 9 : Amplitude distortion occurs when
1. Impulse response is not constant
2. Impulse response is constant
3. Frequency transfer function is constant
4. Frequency transfer function is not constant
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Question 10 : Example for antipodal bandpass signaling is
1. BPSK
2. ASK
3. FSK
4. MSK
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